401689993948 has 24 divisors (see below), whose sum is σ = 725145313424. Its totient is φ = 194603904000.

The previous prime is 401689993927. The next prime is 401689993973. The reversal of 401689993948 is 849399986104.

It is a super-2 number, since 2×401689993948² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12269253 + ... + 12301948.

Almost surely, 2^401689993948 is an apocalyptic number.

It is an amenable number.

401689993948 is a deficient number, since it is larger than the sum of its proper divisors (323455319476).

401689993948 is a wasteful number, since it uses less digits than its factorization.

401689993948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24571333 (or 24571331 counting only the distinct ones).

The product of its (nonzero) digits is 120932352, while the sum is 70.

The spelling of 401689993948 in words is "four hundred one billion, six hundred eighty-nine million, nine hundred ninety-three thousand, nine hundred forty-eight".